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| Cotoneaster rosiflorus
K. C. Chang & F. Y. Lu
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Abstract
A new species of Rosaceae subfam. Spiraeoideae, tribe Pyreae (formerly subfamily Maloideae) from Taiwan is described. A taxonomic treatment, line drawings, color photographs and pollen SEM micrographs are provided to illustrate the species. A somatic chromosome number of 2n = 68 is reported for the first time for Cotoneaster rosiflorus. Cotoneaster rosiflorus occurs mainly at 2,500-3,500 m altitude in central Taiwan. It resembles C. morrisonensis vegetatively, but is distinct by the erect to slightly spreading pink petals, pink or reddish filaments, 3-5 styles, and 3-5 pyrenes.
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| Figure 2. Cotoneaster rosiflorus K. C. Chang & F. Y. Lu. A, Habit, flowering; B, Habit, fruiting; C, Flower, viewed from above; D, Flower, longitudinal section; E, Petal; F, Immature pome; G, Immature pome, longitudinal section; H, Immature pome, cross section; I, Ripe pome; J, Pyrenes. |
K.-C. Chang, C.-C. Wang, S.-L. Deng, Yoshiko Kono, F.-L. Lu and Ching-I Peng. 2011. Cotoneaster rosiflorus (Rosaceae), A New Species from Taiwan.
Botanical Studies. 52(2); 211-218.
